Exercise boot



FIG. 1 is a front perspective view of my new design for an exercise boot.

FIG. 2 is a left side elevation view of FIG. 1.

FIG. 3 is a right side elevation view of FIG. 1.

FIG. 4 is a front side elevation view of FIG. 1.

FIG. 5 is a back side elevation view of FIG. 1.

FIG. 6 is a top plan view of FIG. 1; and,

FIG. 7 is a bottom plan view of FIG. 1.

The broken lines in the figures show portions of the exercise boot which form no part of the claimed design. 

CLAIM The ornamental design for an exercise boot, as shown and described. 